自我不是现成的东西，而是通过行动选择不断形成的东西。

The knowledge that you have emerged wiser and stronger from setbacks means that you are, ever after, secure in your ability to survive. You will never truly know yourself, or the strength of your relationships, until both have been tested by adversity. Such knowledge is a true gift, for all that it is painfully won, and it has been worth more than any qualification I ever earned.

权力平衡是维持国际体系和平的唯一途径。

"Travel is fatal to prejudice, bigotry, and narrow-mindedness."

一旦心灵被启蒙，就无法再次变得黑暗。